n | a(n) |
---|---|
0 | 4 |
1 | 2 |
2 | 8 |
3 | 17 |
4 | 84 |
5 | 177 |
6 | 737 |
7 | 1857 |
8 | 7732 |
9 | 19457 |
10 | 78223 |
11 | 203777 |
12 | 809145 |
13 | 2134017 |
14 | 8349013 |
15 | 22347777 |
16 | 86533892 |
17 | 234029057 |
18 | 897748577 |
19 | 2450784257 |
20 | 9328491339 |
21 | 25664946177 |
22 | 97021416973 |
23 | 268766806017 |
24 | 1009936510009 |
25 | 2814562533377 |
[4,2,8,17,84,177,737,1857,7732,19457,78223,203777, 809145,2134017,8349013,22347777,86533892, 234029057,897748577,2450784257,9328491339, 25664946177,97021416973,268766806017, 1009936510009,2814562533377] |